The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 1997
Filed:
Oct. 13, 1994
Koji Zaiki, Kadoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention relates to an optimizing compiler apparatus for converting a source program into an object program for use by a parallel computer, which optimizes the number of data transmissions between processing elements for a parallel computer made up of a plurality of processing elements, composed of a loop retrieval unit for retrieving the loop processes from a program, a data transmission calculation unit for calculating the data transmission count generated when each of the loop processes is parallelized, a parallelization determination unit for determining the loop to be parallelized as the loop, out of all the loops in a multiple loop, with the lowest data transmission count and a code generation unit for generating parallelized object code for the determined loop. The data transmission calculation unit is made up of a right side variable retrieval unit for retrieving the variables on the right side of an equation in the loop retrieved by the loop retrieval unit, a variable information storage unit for storing information relating to array variables which should be distributed among every processing element for the part of the program which comes before the loop retrieved by the loop retrieval unit and a calculation unit for calculating the data transmission count based on the variable information for the retrieved right side variable.